GE 90-30/20/Micro manual Trun INT, Dint

4

TRUN (INT, DINT)

The Truncate function is used to round the real number toward zero. The original data is not changed by this function.

Note

The 350 and 360 series CPUs (Release 9 or later and all releases of CPU352) are the only Series 90-30 CPUs with floating point capability; therefore, the TRUN function has no applicability for other 90-30 CPUs.

When the function receives power flow, it performs the conversion, making the result available via output Q. The function passes power flow when power is received, unless the specified conversion would result in a value that is out of range or unless IN is NaN (Not a Number).

_____

(enable)	(ok)
TRUN_

INT

(value to be converted) —IN Q— (output parameter Q) _____

Parameters:

Parameter

Description

enable	When the function is enabled, the conversion is performed.
IN	IN contains a reference for the real value to be truncated.
ok	The ok output is energized when the function is performed without error, unless the value is
	out of range or IN is NaN.
Q	Q contains the truncated INT or DINT value of the original value in IN.

Note

It is possible for a loss of precision to occur when converting from REAL to DINT since the REAL has 24 significant bits.

GFK-0467K Chapter 4 Series 90-30/20/Micro Instructions Set 4-105